The husband and wife-to-be were first introduced back in 2007, by mutual friend Robert Downey Jr., who spoke with Details about their now-famous courtship. "He and Jen fell in a real, legit fashion," Downey said, "and he was willing from the jump to make sacrifices."

One of those sacrifices was his anonymity. Since falling in love with Aniston, 45, Theroux has experienced the perks and pitfalls of uber-fame 10 times over. While he doesn't necessarily welcome the attention, he doesn't let it get to him, either.

"It doesn't feel like a hardship, it doesn't feel difficult," the Wanderlust star told Details. "It can be an annoyance, but it's not the end of the world. You have to center on what its core thing is, which is that you met someone you fell in love with. It's hard to explain. I just find myself wondering, 'What's the big f---ing deal?'"

Fame, in general, is something of a mystery to the actor. "There's a huge distinction between wanting to act and wanting to be a famous actor," he explained. "Most of the people that jump off buses in Hollywood just want to f---ing 'make it.' And I never had that drive. Honestly. I could never visualize myself in that way."

Credit: Mark Seliger

Theroux also spoke with Details about his early days in New York, recalling his humble beginnings in less-than-luxurious apartments. "I used to garbage-pick," he said. "It sounds much more disgusting than it is. You learn a lot about society by seeing what's thrown away. During the period I was doing that, a lot of great stuff was being tossed."

Theroux isn't "particularly nostalgic" about the past—he doesn’t even keep pictures of friends or family around—but his connection with New York runs long and deep.

"It wasn't even the old thing about if you can make it there, you can make it anywhere," he told Details. "It had nothing to do with that. You just felt really free. It felt like no one was going to judge you. You could disappear here and be more yourself than you'd ever been."